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992 Swasey (A922 VD)
Classification: Main-belt Asteroid          SPK-ID: 2000992
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 49 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08558386773479641 2.0312e-08  
a 3.032886766317509 1.0512e-08 au
q 2.773320586454377 6.1096e-08 au
i 10.83911627848092 9.2718e-07 deg
node 212.1002050786568 2.733e-06 deg
peri 347.2188114938778 1.3692e-05 deg
M 107.1363809792282 1.2127e-05 deg
tp 2458822.360809991675
(2019-Dec-04.86080999)
6.4631e-05 TDB
period 1929.224288834903
5.28
1.003e-05
2.746e-08
d
yr
n .1866034976251575 9.7013e-10 deg/d
Q 3.292452946180642 1.1411e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3366  
   data-arc span      36055 days (98.71 yr)  
   first obs. used      1922-11-21  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40732  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 07:13:42  

Additional Information
 Earth MOID = 1.77197 au 
 Jupiter MOID = 1.67674 au 
 T_jup = 3.210 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457045.5 (2015-Jan-23.0) TDB
Reference: JPL 49 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08489536718354025 2.0176e-08  
q 2.770595329665634 6.0535e-08 au
tp 2456886.746887975690
(2014-Aug-17.24688798)
6.5703e-05 TDB
node 212.2635397943139 2.7365e-06 deg
peri 344.9774037984873 1.4002e-05 deg
i 10.84363318004443 9.2786e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3366  
   data-arc span      36055 days (98.71 yr)  
   first obs. used      1922-11-21  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40732  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 07:13:42  

Additional Information
 Jupiter MOID = 1.67674 au 
 T_jup = 3.210 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.070674287923641E-16 -1.205928797603931E-15 4.669053665035696E-13 -3.221694345497796E-14 8.873440217314166E-14 -7.377179482048734E-15
q -1.205928797603931E-15 3.664472761403753E-15 -1.431122322446425E-12 9.821392964189854E-14 -2.719939111382978E-13 2.26633132388495E-14
tp 4.669053665035696E-13 -1.431122322446425E-12 4.316853355689443E-9 -1.033381332977007E-10 9.144909601824557E-10 -2.407746736650967E-11
node -3.221694345497796E-14 9.821392964189854E-14 -1.033381332977007E-10 7.488315625539841E-12 -2.372766626904272E-11 -4.043896764202986E-13
peri 8.873440217314166E-14 -2.719939111382978E-13 9.144909601824557E-10 -2.372766626904272E-11 1.960614087734763E-10 -3.988828633015828E-12
i -7.377179482048734E-15 2.26633132388495E-14 -2.407746736650967E-11 -4.043896764202986E-13 -3.988828633015828E-12 8.609242509294243E-13

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.61   n/a E2021B10  
diameter diameter 27.585 km 0.376 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 13.305 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2020) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Marchini, A.; Conti, M.; Vallerani, C.; Papini, R.; Salvaggio, F. (2020) Minor Planet Bull. 47, 265-267.]
[Polakis, T. (2020) Minor Planet Bull. 47, 314-321.]
geometric albedo albedo 0.111   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

992 Swasey (A922 VD)          Discovered 1922-Nov-14 by Struve, O. at Williams Bay
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1927-May-27 01:56 00:01 Jupiter 1.83645336302804 1.83645270403392 1.836454022023 2.89703717402771 2.7331977051086 2425027.580388092 1.43784835073359 78.0651182020208 9.17089474738686 -61.732219820848 8150975.06919754 T 49 CATAB v2.0g-lin.ifort 2021-Aug-25 07:15:00 2021-Aug-25 07:15
1965-Jun-02 12:06 < 00:01 Jupiter 1.94233878435883 1.94233824050282 1.94233932821495 3.80893063182622 3.69266637051337 2438914.004168362 0.777573408592405 38.2709184751503 11.2695206127073 49.8820861464897 6680066.9184165 T 49 CATAB v2.0g-lin.ifort 2021-Aug-25 07:15:00 2021-Aug-25 07:15
1974-Sep-01 11:57 < 00:01 Jupiter 1.88059176021794 1.88059140281035 1.88059211762564 2.85835532226947 2.69618080127436 2442291.997650395 0.691249990594942 33.7689358361976 8.91485394886576 -59.8920413883891 8287870.84900884 T 49 CATAB v2.0g-lin.ifort 2021-Aug-25 07:15:00 2021-Aug-25 07:15
2012-Sep-09 06:08 < 00:01 Jupiter 1.8790112499823 1.87901104899329 1.8790114509713 3.74356697318545 3.62115061074264 2456179.755885805 0.131993999637163 15.7886184645882 8.39579158113523 -89.1635609359311 7773805.28651355 T 49 CATAB v2.0g-lin.ifort 2021-Aug-25 07:15:00 2021-Aug-25 07:15
2021-Dec-03 22:53 < 00:01 Jupiter 1.93144798288449 1.93144777121405 1.93144819455482 2.85011864209148 2.69185638040364 2459552.453449589 0.166882014277956 8.76289823760155 6.44968666568807 44.4410945444322 8177254.55454909 T 49 CATAB v2.0g-lin.ifort 2021-Aug-25 07:15:00 2021-Aug-25 07:15
2059-Dec-18 20:40 < 00:01 Jupiter 1.82187750058643 1.82187711043863 1.82187789073455 3.69384626119136 3.56576295408801 2473446.361139959 0.705639037080623 50.9128772776172 9.59997153535177 71.6724833574934 6989857.38816156 T 49 CATAB v2.0g-lin.ifort 2021-Aug-25 07:15:00 2021-Aug-25 07:15
2069-Mar-09 11:48 < 00:01 Jupiter 1.98601796058386 1.98601742033302 1.98601850083469 2.89955659526824 2.7485346455585 2476814.991515039 0.927356222648483 34.297121918454 7.51253888126996 -46.5029682203933 7154309.57485633 T 49 CATAB v2.0g-lin.ifort 2021-Aug-25 07:15:00 2021-Aug-25 07:15
2107-Apr-04 15:57 00:01 Jupiter 1.77970590445748 1.77970525963689 1.77970654928018 3.66273239907376 3.5304023383787 2490719.164262560 1.39375185246141 109.428728480138 9.36807122907799 74.1410392720331 6972916.31094542 T 49 CATAB v2.0g-lin.ifort 2021-Aug-25 07:15:00 2021-Aug-25 07:15
2154-Jul-28 14:51 00:02 Jupiter 1.74952876233238 1.74952793299704 1.74952959167349 3.63830158168311 3.50270637270428 2508001.118638746 2.04297696974192 172.569627764621 9.06186467988226 76.8113409991391 7033541.55864437 T 49 CATAB v2.0g-lin.ifort 2021-Aug-25 07:15:00 2021-Aug-25 07:15

Alternate Designations
 A922 VD = 1969 TA4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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